Thanks for the info @sushey ! Yes, I know that stuff. I was just confused because darktable showed following warnings saying that the white balance was applied twice:
as far as I know from the stable build, the warning only appears when you tweak the white balance module and the color calibration module for the same edit.
Maybe it is just a problem because I’m not using the exact same master build as Boris. But anyway my original question was answered. Thanks!